23266838389 has 2 divisors, whose sum is σ = 23266838390. Its totient is φ = 23266838388.

The previous prime is 23266838377. The next prime is 23266838407. The reversal of 23266838389 is 98383866232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21581079025 + 1685759364 = 146905^2 + 41058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23266838389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23266838689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11633419194 + 11633419195.

It is an arithmetic number, because the mean of its divisors is an integer number (11633419195).

Almost surely, 2^23266838389 is an apocalyptic number.

It is an amenable number.

23266838389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23266838389 is an equidigital number, since it uses as much as digits as its factorization.

23266838389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17915904, while the sum is 58.

The spelling of 23266838389 in words is "twenty-three billion, two hundred sixty-six million, eight hundred thirty-eight thousand, three hundred eighty-nine".